Abstract The Climate-Neutral and Smart Cities Mission is a new initiative aimed at promoting sustainable development across European cities. Supported by the Climate Mission, these cities are tackling climate change by developing and adopting sustainable strategies that also benefit residents. Using data from 112 cities participating in the EU-funded NetZeroCities Mission project, this analysis examines indicators chosen by cities to track urban progress and impacts beyond greenhouse gas (GHG) emissions, particularly focusing on Sustainable Development Goal 11 (SDG11). Additionally, this study provides a scientific perspective by introducing a hybrid AI-assisted method for clustering both standard NetZeroCities framework indicators and unique indicators introduced by cities. This approach reflects established impact assessment practices and incorporates cities’ extensive experience with climate monitoring. By grouping these different types of indicators, the research evaluates whether local monitoring efforts align with or diverge from NetZeroCities Monitoring, Evaluation and Learning (MEL) framework priorities and explores what these differences might reveal about how cities put climate measures into practice locally. Similar content being viewed by others Acknowledgements This research is done in the SGA-NZC project that was funded by the European Union’s Horizon 2020 Research and Innovation program under Grant Agreements No101121530. The authors are thankful to project partners for their effort in Mission Cities Action Plans digitalization. Author information Authors and Affiliations Corresponding author Ethics declarations Competing interests The authors declare no competing interests. Additional information Publisher’s note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. Rights and permissions Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate